[单选]  阅读下面的句子，根据文章内容进行判断，正确写“T”，错误写“F”。      Meetingsareverycommonnowadays.Theycanbeweekly,monthlyorannually.Somepeoplethinkmostmeetingsfeellikeawasteoftime.Theyseempointlessandboringattimes.Thenhowdoyourunaneffectivemeeting?        First,assignroles,suchasgreeter,timekeeperandnotetaker,sothatyou,theorganizer,canbefreetoleaddiscussionsandpresentations.        Next,takechargefromthestart.Everyonewilllistentoyouandjoinyourdiscussionifyoutakechargeineveryaspectofthemeeting.Showeveryonethatyoureallyknowwhatyouaretalkingabout,andeverythingthatyoutalkaboutisuseful.        Mostimportantofall,followtheagenda.Attheendofthemeeting,spendalittleextratimefortheparticipantstodiscussanythingthatneedstobeimmediatelydiscussedbutwhichmaynothavebeenontheagenda.        Alwaysasktheparticipantsquestionssothattheycanspeaktheirmindsandkeeptheminterested.Rememberthatagoodmeetingisatwo-waycommunication.Beopentoeveryone'sopinion,ideas,andsuggestions.Don'tforgettothankthemfortheideastheypresent.        Andfinally,closethemeetingwitheveryoneknowingwhatisexpectedofthemandwhattheyshoulddoforthefollowingweeks.Then,sendoutmeetingminuteswithinafewdays,whileeveryonestillremembersthepoints. 1.Asuccessfulmeetingshouldhavedifferentpeopletoplaydifferentroles.2.Generallypeopleonlydiscusstheitemslistedontheagendainasuccessfulmeeting. 3.Anunsuccessfulmeetingmightbefullofsingle-waycommunication.      4.Whenthemeetingisclosed,itmeansthereisnothingtodointhefollowingweeks. 5.Minutesshouldbesentouttotheparticipantswithinamonthaftertheendofthemeeting.